Waukesha Weather in September

September is one of the perfect months to visit Waukesha, with daytime temperatures of 23°C (73°F) and lows of 11°C (52°F) at night. Do note that quite a bit of rainfall is typical, averaging around 78 mm (3.1 in).

Rainfall in Waukesha in September

You can expect rain on around 9 days based on historical patterns, with 78 mm (3.1 in) average for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Waukesha in September

Waukesha in September is worth a visit. The temperature is perfect, with 23°C (73°F) during the day and 11°C (52°F) at night. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. At 11°C (52°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Waukesha in September

There are approximately 216 hours of sunshine this month, resulting in mostly clear days.

If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Waukesha.

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Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Waukesha's climate page.

Waukesha Temperature in September

Min Temperature 11°C (52°F)  

Max Temperature 23°C (73°F)  

Chance of Rain 31%  

Precipitation 78 mm (3.1 in)  

Rainy days 9 days  

Humidity 75% *  

Sunshine 216 hours *  

Percentage Sunshine 57% *  

* Data from: Milwaukee, the United States of America (25 KM, 15 Miles).

What to Wear in Waukesha in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Waukesha in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

9/10

Walking

9/10

Barbeque

8/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Waukesha's climate page.

More climate data for Waukesha

Temperature Rainfall Sunshine Humidity

See the full Waukesha climate overview or explore weather in the United States of America.